Adolphlehmann



A. LEHMANN.

AUTOMATIC ALARM VALVE.

APPLICATION FILED JUNE29, 19H.

1 ,309,362. I Patented July 8, 1919.

UNITED STAT ES PATENT OFFICE.

ADOLPH LEHMANN, 0F HICKSVILLE, NEW YORK, ASSIGNOR T0 MABEL CRIST, 0F

HICKSVILLE, NEW YORK.

AUTOMATIC ALARM-VALVE.

Specification of Letters Patent. Patented July 8, 1919. i

Application f led June 29, 1917. Serial No. 177,844.

To all whom it may concern:

Be it known that I, ADoLrH LEHMTANN, a subject of the Emperor of Germany, and a resident of Hicksville, county of Nassau, State of New York, have invented certain new and useful Improvements in Automatic Alarm-Valves, of which the following is a specification.

This device is intended to be used in conjunction with a boiler blow-off valve and outlet, and when so used should be placed in position between the blow-off valve and the outer end of the blow-off pipe so'that the operation of the blow-off valve will allow steam and water, blown from the boiler, to pass into and through my device.

The object of the invention is to indicate or announce the operation of the blow-off valve, that is, when the blow-off valve is operated my device will also be operated with the result that a bell, light or other indicating means will show the period of time in which a boiler is blowing off.

The continual ringing of a bell would serve to keep the attention of the attendants mind upon the blow-off, and therefore it is believed that my device will prevent a boiler being blown down totoo great an extent, an extent which often proves disastrous.

The device is particularly important where the boilers are blown into a pool or sewer, and where the noise of the blow-off is muffled.

In the description which follows I will set forth in full the construction and operation of my device.

The following is what I consider a good means of carrying out the invention and the accompanying drawings should be referred to fora complete understanding of the specification which follows.

In the drawings Figure 1 shows a side elevation of my device.

Fig. 2 a sectional view.

Fig. 3 an enlarged sectional view of the I push button device.

Fig. 4 an elevation of the push button support. This figure is at right angles to Fig. 1.

Fig. 5 shows an end elevation of the push button support or bracket.

Similar reference numerals indicate llke parts in all of the figures where they appear.

The valve which I employ is what may be termed an angle valve, that is, the valve stem is arranged at an angle to the axial line of the valve casing. In Fig. 1, the valve casing is shown at 1, the valve stem at 2, and 3 indicates what maybe termed the valve stem guide. The stufling box Al, has a nut secured to the guide 3, and compress ing packing 5, upon the stem 2.

Secured to the valve stem guide 3 and extending outwardly therefrom is a bracket, consisting of the arms 6 and 7, the inner ends of which en age the valve stem guide, and are riveted tiereto, and the outer ends of which are formed integral having an enlargement or plate 8 between them.

Upon the inner surface'of the plate 8 I secure a push button casing 9, and in the casing 9 a push button is provided, with the push or button 11 arranged in line with and adjacent to the outer end of the valve stem 2.

The push button casing 9 may be of metal and is provided with a plurality of guides or ways 12 and '13. The push button proper has a body portion 14, recessed toreceive a spring 15, the opposite end of which impinges' upon the enlargement 8 of the bracket 6-7. Upon the base" 14 I screw 15 and outward through a perforation in the enlargement 8.

The valve stem 2 is provided with avalve 20, which engages valve seats within the body of the valve, and a spring 21, arranged between the valve 20 and the inner end of the valve stem guide 3, urges the valve 20 into engagement with its seat.

My device should be arranged exterior to an ordinary controlling valve such as a blow-off valve, and when the blow-off valve is opened the pressure received in the direction of the arrow 22 will force the valve 20 away from its seat and the valve stem 2 will be moved outward. The stem 2 will impinge upon the button 11, causing this button to move the spring contact member 17 into engagement with the stationary contact 18, and a circuit from a bell, lamp or other signaling device will be established. The continued movement of the valve stem 2 will bodily move the push button casing 10 and the member 14 backward against the pressure of the spring 15 and the movement of these parts is sufficient so that the valve may open to its full extent.

When the pressure, entering as shown at 22, is cut 0E, the spring 21 will return the valve 20 to its seat, and the spring 15 will return the member 14, and the push button into the position shown in the drawing. It will be noted that the spring 15 does not control the operation of the push button but merely provides a means for allowing the push button to be moved when the movement of the valve stem 2 is excessive. This construction prevents the breaking of the button and also the limiting of the operation of the valve.

I may use a valve of other shape or design, I may employ a swinging valve and I may use a standard push button, an other modifications may be made within the scope of the appended claims without departing from the principle or sacrificing the advantagcs of the invention.

Having carefully and fully described my invention what I claim and desire to secure by Letters Patents is:

l. A device of the character described, comprising a valve stem, a push button arranged in the line of said valve stem said push button comprising the casing having guides, a secondary casing in said guides, contact means within said secondary casing and a resilient member within said first mentioned casing for moving said second casing bodily.

2. In a device of the character described, a push button having a contact means, a device for closing said contact and a resilient member for opening said contact, a casing in which said push button is adapted to move and a resilient member for returning said push button after each movement.

3. In a device of the character described, a push button having a cylindrical casing and a support therefor, a base arranged in said casing, a cap secured upon said base and a contact member between said cap and said base, and a resilient member between said base and the support of said casing, said resilient member being retained within said casing.

Signed at New York city, county and State of New York this 9th day of June 1917.

ADOLPH LEHMANN.

Witnesses:

G. E. S. MARR, ARTHUR PHELPS MARK. 

